Jealousy is both reasonable and belongs to reasonable men, while envy is base and belongs to the base, for the one makes himself get good things by jealousy, while the other does not allow his neighbour to have them through envy.
Aristotle
I believe any question that man can ask has a reasonable answer-at least an answer that is as consistent with God's existence as it is in opposition to God's existence. John Clayton
The happiness of your life depends upon the quality of your thoughts: therefore, guard accordingly, and take care that you entertain no notions unsuitable to virtue and reasonable nature.
Marcus Aurelius
It is quite true, as some poets said, that the God who created man must have had a sinister sense of humor, creating him a reasonable being, yet forcing him to take this ridiculous posture, and driving him with blind craving for this ridiculous performance. David Herbert Lawrence